Merck
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CX1723

Supelco

无水柠檬酸粉末

anhydrous Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Synonym(s):
Citric acid
Linear Formula:
HOC(COOH)(CH2COOH)2
CAS Number:
Molecular Weight:
192.12
Beilstein:
782061
MDL编号:
EC索引号:
201-069-1

Agency

meets USP/NF

质量水平

200

蒸汽压

<0.1 hPa ( 20 °C)

测定

99.5-100.5% dry basis (alkalimetric)

形式

fine powder

expl. lim.

8 %, 65 °F

杂质

≤0.005% Water-insoluble matter
≤1% Water (Karl Fischer)

sulfated ash (600 °C)

≤0.02%

颜色

white to almost white

pH值(酸碱度)

1.7 (20 °C, 100 g/L in H2O)

pKa 

(1) 3.13, (2) 4.76, (3) 6.4

bp

200 °C/1013 hPa (decomposition)

mp

153-159 °C (lit.)

溶解性

1330 g/L

密度

1.67 g/cm3 at 20 °C

痕量阴离子

chloride (Cl-): ≤0.001%
oxalate (C2O42-): ≤0.036%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.002%

痕量阳离子

Fe: ≤0.0003%
Pb: ≤0.0002%

运输

ambient

储存温度

room temp

SMILES string

OC(=O)CC(O)(CC(O)=O)C(O)=O

InChI

1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)

InChI key

KRKNYBCHXYNGOX-UHFFFAOYSA-N

包装

500 g in Plastic bottle
2.5 kg in Plastic bottle
12 kg in Plastic drum
45 kg in Drum, fibre

应用

anhydrous Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

分析说明

Appearancewhite to almost white, fine powderAssay (alkalimetric on dried substance)99.5-100.5%Chloride (Cl)0.001% maxIdentity (IR-spectrum)passes testIron (Fe)0.0003% maxLead (Pb)0.0002% maxOxalate (C2O4)0.036% maxPhosphate (PO4)0.001% maxReadily carbonizable substancespasses testSulfate (SO4)0.002% maxSulfated ash (600°C)0.02% maxWater (acc. to Karl Fischer)1.0% maxWater-insoluble matter0.005% max

象形图

Exclamation mark

警示用语:

Warning

危险声明

危险分类

Eye Irrit. 2 - STOT SE 3

靶器官

Respiratory system

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(F)

Not applicable

闪点(C)

Not applicable

Certificate of Analysis

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